Lock.



P. LAZAmnEs.

. LOCK,V I APPLICATION FILED DEC.3I, ISI?.

1,273,883, Patented July 3o, 1918.

2 SHEETS-SHEET I /Wf A TTORNEY P'. LZARIDES.

Lock. APPLICATION FILED 050.31. 1917 v 1,273,883. Patented July 30,1918.

2 SHEETS-SHEET 2:

f @f III gg 5' .Y I

| l 7i I "j INVENTQR. 26 t37, j/afa/Z azarldef PLATON LAZARIDES, GF NEVI YORK, hl'. Y.

LOCK.

Specification of Letters Patent.

Patented J uly 30, 19118.

Application filed December' 31, 1917. Seria1No.209,615.

To all 'whom t may concern Be it known that l, PLA'roN Lammens, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specilication. l

This invention relates to improvements in locks, and the present invention contemplates certain improvements over the .lock disclosed in my pending application Serial Number 169,192.

One of the objects of the present invention is to simplify the construction of lock disclosed in the aforementioned application, so that the same may be more cheaply construct-ed, and whereby greater certainty of operation is obtained.

Other objects and aims of the invention, more or less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, .conibiinn'ions.,A

arrangements of parts and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

ln the accompanying drawinos. which are y io be taken as a, part of this specification, and in which l have shown a merely preferred form of embodiment of my invention:

Figure 1 is a horizontal sectional view, taken on line lil of Fig.

Fig. i). is a vertical sectional view, taken on line ll-ll of Fig. l.

Fig. is an elevational view, partly in section, of the parts in a diii'erent position from that shown in Fig. 2.

Fig. l is a sectional view taken on line lV lV of Fig. 3;

Fig. 5 is an end elevational view of the lock.

Fig. (l is a view inelevation of the keeper.

Referring now to the drawings, whe-rein similar reference characters refer to similar parts throughout the several views thereof, the referencel numeral 1 denotes a casing', which is shown as inserted in a similarly7 formed aperture provided in a door 2. This casing carries the usual tumbler construction employed in locks of this character, which has been generally illustrated at 3.

Provided interiorly of the casing is a shaft, Al, into which the key 5 is inserted, and it will be understood that when the proper key is inserted in the keyholeffprovided in this shaft, the tumbler mechanism will be so operated that the shaft will be permitted to rotate, whereby the operative part-s of thev lock presently to be described will he operated.

ln the present insta-nce an arm 6, provided with a lateral extension 7, is adapted to be operated when the shaft l is rotated. This arm, is mounted upon the shaft e and is adapted to engage with loperative parts of the lock, presently to be described, to operate the latter. lt will be understood that normally the tumblers retain the shaft 4 against rotation and only permit 'the' same to be rotated when the proper key has been inserted in the lock.

The casing 1 at its'outer end is provided with a head 8, the edge of which projects beyond the sides of the casing to forni a shoulder or liange 9, which rests in engagement with the exterior surface ,of the door 2. lt will be noted that this shoulder is quite narrow, and that the metal forming the same is tapered so that. it is quite thin at the point where the shoulder joins the head portion 9. The object of this construction is 'to provide such a shoulder that if an attempt he made to break the lock by inserting a lever such as a jimmy7 between the shoulder and the exterior surface of the door, that the .metal composing the shoulder will break away, leavingnothing for the intruders pryinO' implement to work against.

rl`he casing4 1 is provided with a rear- Sil wardly extending portion l0 provided with lateral ears 11, the latter being apertured to receive clamp screws 12 and 13 respectively. Reference numeral le denotes the casing" which incloses the mechanism which operates the lock, said casing in the present instance being formed of a sheet metal shell, the rear wall 15 of which is'provided with a struck-out rib 16 of circularv formation,

said rib engaging with the mouth of the.

opening 17 of the door. The inner or rear wall 15 lies in engagement. with the inner surface of the door, andthe rib 16 deterilo clamp screws 1-2 and A13 tasten together the casing l, and the casing il, and hold these parts in fixed relation with respect to the door, and as well said screws clamp the shoulder 9 tightly against the exterior wall or" the door and the. wall l5 ot the casing in close engagement with the inner surface ot the door. The clamp screws l2 and 13 it will be noted also hold the casing l against rotative movement within the aperture 17.

The reference numerals 20 and 2i denote plates which are located in opposed relation upon either side of the inner wall l5 ot the lock casing, said plates being held together as'by means of rivets 22 which pass through them and which extend through an aperture 22 provided in said wall. These plates so held together are adapted to rotate within the opening 22', and extending through said plates is a member 23 which is attached to the hey operated shaft The outer plate 2l carries the arm 6, the extension 7 which when the former is rotated, actuates the lock niechanism.

Thus an operative connection is provided between the shaft 4 and the arm T, so that when the proper key is inserted in the lock a rotation thereof through the shaft el will cause a rotation of the arm (i, and the offset portion 7 thereof will engage an operative part et the lock mechanism proper, which will presently be described.

A looking member or bolt 27 is provided, the latter having in the present instance an integrally formed shaft. 25, the ends oit which are journaled in suitably termed bearings provided in the iront wall 26 ot the casino', and the rear wall i5 thereof.

IThe wall 26 et the casing, which carries the sides, top and bottom walls of the casing, is separable from the rear wah of the casing, so that the parts may be readily assembled.

The locking member or bolt 27 `is substantially circular in cross section, and is semi-circular in form,` the forward end thereof being rounded of?, as at 28. 29 indicates a web of metal, which is preferably formed integral with the arm 2 ot the bolt, and the bolt prop This web tills the semicircular space formed between the locking` member, and its intel 'ally formed shaft The locking nieiinbcr 2?' is adapted to cooperate with a keeper 30 which is adapted to be secured to the jamb or frame oi the door, as clearly shown in l, 3 and G 't the drawings. This keeper has a face plate provided with an elongated slot 3l, which is enlarged at its ends, as at 32 and 33, as shown in Fig. (3 ot the drawings. When the locking member or bolt swung in its bearings to engage with the keeper, the rounded end thcreoi ...ers the aperture 32 of 'd keeper. the web 29 thereof occupyi frrow space ino-ruled in the slot 1 ,erases 3l. By means oi this construction it will be noted that when the locking member is swung to engage with the keeper, it is impossible for an intruder to insert an instrument between the frame and the doorway through the locking member, such operation being prevented by the presence oi the web 29.

Mounted upon the shaft is a gearwheel 34, the teeth of which are in mesh with a gear. wheel 35, which is' mounted to rotate upon the shaft, 37 of the handle or knob 37, said 'shaft extendingthrough an apertur provided in the outer wall ofthe lock casinfr, said shaft being rotatably mounted in said aperture. Keyed or otherwise fastened to the shaft 37 is a plate 38, said plate being provided with an arm 38 and with a slot 38. Arm 38 when plate 38 is rotated in the direction ci the arrow, as by means of the knob 37, is adapted to engage with a pin 39 carried upon the gear wheel 35, and which f extends laterally therefrom, so that gear wheel 35 will be impelled to rotation, there by rotating the goal-*wheel 34- in mesh therewith and operating the bolt 27.

Inter-posed between a post el which is formed by a struck-up part of the plate 38, and a pin l2 extending inwardly from the front wall 26 of the casing, is a retractiie spring 43the function of which is to urge the gear wheel 35 into rotation in a direction contrary to that shownlby the arrow in Fig. 2, whereby the gear wheel 3i, and the locking men'lber 27, at all times have a bias or tendency to rota-te in such a. direction that the locking member will be urged to movement into engagement with its keeper.

The reference numeral 44 denotes a detent which is pivotally supported upon the pivot screw 45. The outer end of this detent. is

` rovided with an offset or u standinor portion 46, which is adapted to engage with the outer end of the arm 24 et the locking niember, so that when the parts are in a position shown in Fig. 2 ot' the drawings, the engagement et this detent with said arm prevents the locking member or bolt Ytrom being swung in the direction indicated by the arrow. i7 indicates'a spring, preferably to be formed of spring wire, which encircles the pivot pin 45, and which cooperates with a fixed pin L28 carried by the iront wall oi" the casing to hold the detent et in its normal position, saidl )in also operatingl as a step to limit the inward swinging movement ot' the detent, Mounted upon the detent is a pin 4:5), andthis pin in engagement with the end 50 of the sprin@r il?, and tl arm 50 of said spring, whereby by whic engagement the spring performs its iunction upon the detent. The end 50 et the spring a? is located in the path of a post i 'hielo is formed by a struck-up a n1 38 of the plate 38, so

is rotated the post 5i wel ice Leraeee end 50 of said spring 47, whereby the engagement of said end 50 through the post 49, will swing the detent outwardly, thereby carrying the offset portion thereof out of the path ofthe arm 24: of the locking member, so that the latter may be retracted. It will be noted that by reason of the provision of the slot 38 and the plate 38, a free'initial movement 'of the plate 38 may be had before there is any rotation of the gear wheel 35, by means of the engagement therewith of the arm 38. This permits the post 51 to engage the end '50 of the spring 4:7 and move the detent at rearwardly out of the way of the locking member or bolt before the gear 35 commences to rotate the gear wheel 34. v

Mounted to slide in a suitable casing 53, carried by the wall of the casing, is a latch member 54. This latch member is adapted to effect an actuation of the locking mechanism in a manner which will be hereinafter described. The reference numeral 55 indicates a lever, one end of which is provided with legs 55 which straddle the inner end f the easing 53, the part of said lever between said legs being adapted to be raged by the latch member 54. Lever 55 ermediate its ends is provided with an lligated slot G, throlgh which extends a Y ,'ot screw 57, said screw connecting the intermediate portion of the lever with a de 58 provided with an operating button Si), which extends laterally therefrom and through an elongated opening GO provided in the outer wall of the casing; Slide 58 is provided with the upstanding pins (SI and 62, which coperate with portions (i3 and 6ft of a spring 65, the intermediate portion of which encireles a screw 66, the end of which is threaded into the outer wall of the casing, and said screw extending through an elongated slot G7 provided in the slide 58.

It will be seen when the slide 53 is inoved inwardly or outwardly, as by means of the button or handle 59, the coperation between the pins (Sl and 62 with the portions (33 and G4 of the spring (35, will hold said slide in either of two positions, from one to the other of .which it can be moved against the tension of said spring.

The outer end (3S of the lever 55 is adapted to be moved adjacent the outer end of a pin (Si) carried upon the pawl 70, the latter being pivoted upon a screw 7l, so that the end 0f the pawl may be swung into or out of engagement with the teeth upon the gear wheel 35; a spring 72 operating between the end wall of the easing and the pawl, normally urging the latter into engagement .with said gear teeth.

It will be seen that when the pawl is in engagement with the teeth of the gear- 35, as indicated in Fig. 3 ofthe drawings,

said'ggear wheel is prevented from being ro" influence of the spring 4:3.

tated in-'the direction which it is at all times urged by means of the retractile spring43. But when said pawl is moved from engagement with sach teeth said gear wheel is Vpermitted freely to Irotate under the influence of said spring. ift will be also seen that the lever 55 is adapted to establish an operative connection. between the latch member 54 and the pawl,` when said lever is in the p0- sition indicated in Fig. 2 of the drawings, and that lever 55, when moved outwardly as by means of the slide 58, will be moved into such a position that the end 68 thereof will clear the pin G9 .mounted upon 'the pawl 70. l

The latch member 54.- has itsOut-er end projecting through the inner wall of the casing of the lock., so that when the door Ais closed the outer end of said latch will engage with the keeper, the outer end of said latch member being beveled off, as" at 73, so that when such engagement takes place the.v latch member will be forced inwardly, whereby the engagement of the inner end of the latch member will cause an endwise movement of the lever 55. Therefore, if the lever 55 is in such position that the end 68 thereof will engage the pin. (fof the pawl 70, the latter will be disengaged from the teeth of the gear wheel 35, whereby the latter will be rotated under the 4 However, if the slide 58 has been n'amipulated to move the end 68 of the lever out-wi\ardly, whereby it will clear the end of the pi'n 69 of the pawl 70, an inward movement of the latch 54C within its casing will not disturb the operative relation of said latch 70 with the teeth of said gear wheel 34.

The offset portion 7 of the arm (3 is adapted to engage with a post 74 formed by a struck-up portion of the plate 38, so that when the proper hey is inserted in the leek. permitting the shaft 4 to be rotated, the rotation of said shaft et, carrying the arm 6 and its offset portion 7 therewith, will cause the latter to engage with the post 7 4, whereby the plate 38 will be rotated in identically the same manner as it will be rotated by means of the handle or knob 37. Thus the lock is actuatedin the same manner from either the outside or the inside, although kthe means for actuating the lock from the inside or the outside of the door are independent of each other.

The reference numeral 75 indicates a pin carried b v a knob or handle 7G, said pin operating in a slot 77 formed in one of the side walls-of the casing. This pin when slid to oneend of the slot is adapted to form a stop for the detent 44, whereby it will'be .impos-- sible to swing the latter outwardly to carry it from out of the path of the bolt. The pin l75 when moved to the other end of the slot will clear the arm 4:6 of the detent, whereby its iso.V

1er/ases arc shaped bolt mounted within the easing, and adapted to engage With the keeper, a gear wheel operablj.7 connected with said belt. a driving gear wheel meshing with said tiret named gear wheel.y an actuating inember tor said last named gear wheel having a loose connection therewith, key controlled means for operating said actuating member, and a spring interposed between a ixed e support within the. casing. and said actuating member adapted through the latter nor- .maliy to urge said bolt into engagement with its keeper. l

i lock comprising a casing adapted to be secured to a door, a keeper adapted to be secured to the trame, a pivotallv mounted arc shaped bolt mounted within the casing and adapted tol engage with the keeper, a gear wheel mounted upon the shaft of said bolt, a driving gear wheel meshing with said iirst named gear wheel, an actuating member for said second named gear wheel mounted concentrically therewith, said actuating member having a limited independent movement relative to the second named gar iwheel, and said gear wheel and said actuating member having means which engage after suoli limited relative movement between the. aforesaid parts., whereby thereafter they move in unison, means extending into said casing from. opposite directions, each of which is adapted independently to operate said actuating member, and spring means extending between a fixed point in the casing and said actuating member, which is adapted to hold the latter in normal position, and-through the latter and the connections'between said bolt to urge said bolt into locking engagement with its keeper.

3. A lock comprising a casingv adapted to be secured to a door, a keeper adapted to be secured to the 1trame, a pivotallyT mounted arc shaped bolt mounted Within the casing and adapted to be rotated into engagement with the keeper, a gear wheel mounted upon -the shaft of said bolt, a second gear wheel journaled Within said casing, which meshes with said first named gear wheel and drives the same, a plate mounted concentrically of said, second named gear wheel, said plate and said second named gear wheel being so mounted with respect to each other-that they havel a limited independent relative movement, means upon said second named gear wheel and said plate adapted to engage with each other after such rclative movement, whereby thereafter said plate Will drive said gear wheel, and actuating means extending into said casing from opposite direct-ions which are adapted independently to operate said plate.

slt/' lock comprising a casing adapted to be secured to a door, a vkeeper adapted tolse seemed to the frame, a pivotallv mountedarc shapcdbolt'rnounted within the casing and adapted to be rotated into engagement With the keeper, a gear wheel mounted upon the shaft ot said bolt, a second gear Wheel mounted within said casing and having a driving connection with said First named gear Wheel, an actuating plate mounted concentrically of said second named gear wheel and having a limited relative movement with respect thereto, cooperating means upon said second named gear wheel and said plate 'tor .determining the extent ot' said limited relative movement, a spring interposed between a fixed point Within the casing and said plate which normally holds the latter in such position that 'ith the interposed connection between the vsame and the bolt the latter is ureed into engagement with the keeper, and means eX- tending into said casing from opposite directions, each of which is adapted independently to actuate said plate, whereby the latter will retract said bolt from engagement with the keeper.

5., A lock comprising a casing adapted to be secured to a door, a keeper adapted to be secured to the casing, a pivotally mounted arc shaped bolt mounted within the casing, which is adapted to engage with the keeper, a member journaled within said casing having an operative connection with said bolt, adapted to move the. latter into and out of engagement with its keeper, actuating means V`tor said member which is capable of independent- Arelative movement With respect thereto inter osed means u on said mem-y berl and upon said actuating means whereby atteian initial relative movement said elements move in unison, and a spring interposed between a fixed point within the cas-v ing and said actuating means which normally holds the parts in such position that the bolt is urged into engagement With its keeper.V v v 6. A lock comprising a casing adapted to be secured to a door, a keeper adapted to be secured to thev casing, a pivotally mounted arc shaped bolt mounted within the casing, which is adapted to engage with the keeper, a. member journaled within said casing having an operative connection with Vsaid bolt, adapted to move the latter into and out of engagement with its keeper, actuating means for said member which is capable of inde-1 last named means being keg; operated trom the outside ot the doorn' 7. A lock compri.y a easing adapted te be secured to a door, a keeper adapted to be secured to the'irame, a revfeilnbly mounted arc snaped bolt Within the casing adapted to be revolved into engagement with the keeper, a gear wheel mounted upon the shaft of said bolt, an actuating gear wheel journaled within said casing, a slotted actuating plate mounted eoncentrically et said second named gear wheel, a pin niounfd' upon said second named gear wheel and extending through the slot ot said actuating plate, said slot being ot' such width that said actuating late and said second named (fear `wheel are i capable ot relative angular movement with respect to each other, so that said plate may be moved in opposite directions relatively to the gear Wheel until the Walls ot the slot engage With said pin, a spring extending between said plate and the lixed point within the casing adapted to urge said plate into rotative movement in such direction that the bolt through its operative con neetion therewith will be urged into engagementwith its keeper, and nieans extending into said casing from opposite directions, )aca oi" which adapted independently et the other to actuate said plate. i

8. rt lock comprising a casing adapted to be secured to a door, a keeperadapted to be secured to the trame, a revolubly mounted arc shaped bolt Wit-hin the casing adapted to be revolved into engagement withv the keeper, a gear wheel mounted u pon the shaft ot' said bolt, an actuating gear wheel journaleil within said easing, a slotted actuating plate mounted eoncentrically otl said second named gear wheel, a pin mounted upon said Second named gear wheel and extending through the slot ot said actuaing plate, said slot being et such width that said actuating plate and said second named gear Wheel are capable ol relative angular movement with respect to each other, so that said plate may be moved in opposite directions relativelv to the gear wheel until the Walls of the slot engage with said pin, a spring extending between said plate and the fixed point Within the casing adapted to urge said plate into rotative movement in such direction that the bolt through its operative connection therewith will be urged into engagement with its keeper, means extending into said casing t'rom opposite directions, each ot which adapted indel'iendently ot the other to actuate said plate, a pivotally mounted detentwhich normally preventseaid bolt troni being retracted, and means carried by said plate which is adapted to more said detent ont ot' the path ot the bolt upon an initial movement ot the plate with respect to the gear u'heel u'herebythe bolt may be thereaV ter retracted.

9. in a. device of the type described, in

actuating means and hold the boltl in re-y tracted position, and movable means adapted to engage said keeper when the door is closed for releasing said latch from said actuating means.

10. A lock comprisingrin combination, a casing adapted to be mounted upon a door, and a keeper adapted to be secured'to the frame ot the door, a bolt pivotally mounted in said easing and adapted to be engaged by the said keeper, means which normally urges the bolt into engagement, with the keeper, means adapted normally to prevent.

the retraction ot the bolt, actuating means for said bolt, including a. pivotally mounted latch adapted to engage said bolt-actuating means and hold the bolt in retracted position, and movable means adapted to engage the keeper when the door is closed for releasing said latch from said actuating means.

ll. A lock comprising a casing adapted to be secured to a. door, a keeper adapted to be securedrto the frame, a pivotally mounted arc-shaped bolt mounted Wit-hin the casing,

which is adapted to engage 'with the keeper,

resilient means tor normally urging the bolt into engagement With the keeper, actuating means tor said bolt, a plurality of operating means extending into the easing from either side, each of which is adapted independently to retract the bolt, a pivotally mounted catch adapted to engage the actuating mea-ns and hold the bolt in retracted position, and movable means adapted to engage with the keeper when the door is closed, whereby said ,catch will be released -trom the actuating means, and the bolt will automatically move into engage-ment with the keeper.

12. e. lock comprising a casing adapted to be secured to a door, a keeper adapte to be secured to the frame, a pivotally mounted arc-shaped bolty mount/ed `within the easing, which is' adapted to engage 'ejith the keeper, resilient means for normally urging the bolt into engagement Witn the keeper, actuating means for said bolt, a plurality ot operating ineens extending into the easing from either side, each ot which is adapted independently to retract the bolt, a pivotally mounted catch adapted to engage thc actuating means and hold the bolt in retracted position, movable means adapted to engage 'with the lll i ,erases keeper when the door is closed, whereby said l catch -Will be released from the actuating means and the bolt will automatically move into engagement with the keeper, and manually operable means tor detern'iining the operation of said last named n'lovable means.A

13. lock comprising a casing adapted to be secured to a door, a keeper mounted upon the door trame, a pivotally mounted arcshaped bolt located Within said casing, resilient means normally urging said loo-lt into engagement 'with said keeper, actuating n'ieans for said bol t, a pair of independently operative means extending into said casing from opposite sides. each of which is adapted independently to operate said actuating means, a pivotally mountet detent having a freely projectingresilient member, a key actuated shaft provided with an arm adapted to engage said resilient member and having an otlset adapted to engage said. locking bolt, each oil the meanf; employed to operate the actuating means being adapted when operated iii-st to move said datent and then retract said bolt.

14. A lock comprising` a casing adapted to be secured to a door, a keeper mounted upon the door frame, a pivotally mounted arcshaped bolt located within said casing, resili ent means normally urging said bolt into engagement with said keeper, actuating means for said bolt, a pair of independently operative means extendingc into said casing from opposite sides, each et which is adapted independently to operatesaid actuating means. a pivotally mounted datent which normally prevents the bolt from being retracted. each ot themeans employed to operate the actuating means being adapted when operated first to move said detent. and then retract said bolt, and a pivotally mounted catch adapted to engage said actuating means to hold said bolt out of engagement with said keeper.

15. A lock comprising a casing adapted to be secured to a door, a keeper mounted upon the door frame, a pivotally mounted arc-shaped bolt located Within said casing, resilient means normally urging said bolt into engagement with said keeper, actuating means for said bolt` a pair or independcntly operative means extending into said casing' from opposite sides, each of which is adapted independently to operate said actuating means, a pivotally mounted detent which normally prevents the bolt from being retracted, cachot' the means employed to operate the actuating means being adapted when operated irst to move said detent and then retract said. bolt, a pivotally mounted catch 'adapted to engage said actuating means to hold said bolt out of engagement with said keeper, and a plunger extending outwardly from said casing adapt-ed to engage the keeper when the door is closed,

whereby said catch will be moved out of engagement with said actuating means, permitting the bolt to move into engagement' with said keeper.

16. A lock comprising a casing adapted to be secured to a door, a keeper mountedv upon VVthe door frame, a pivotally mounted arcfshaped bolt located Within said casing, resilient means normally urging said bolt into engagement with said keeper, actuating means for said bolt, a pair ot independ- `cntly operative means extending into said ed when operated first to move said detentand then retract said bolt, a pivotally mounted catch adapted to engage said actuating mean.: to hold said bolt out of en: gagement with said keeper, plunger extending outwardly from said casing adapted to engage the keeper when the door is closed, whereby said catch will be moved ont of engagement with said actuating means, permitting the bolt to more into engagement with said keeper, and selected means adaptn ed to connect said plunger with said catch.

17. A lock comprising a casing adapted to be secured to a door, a keeper mounted upon the door frame, a pivot-ally mounted arc-- shaped bolt located Within said casing, resilient means normally urging said bolt into engagement with said keeper, actuating means tor said bolt, a pair of independently operative means extending into said casing *from opposite sides, each of which is adapted independently to operate saidactuating means, a pivot-ally mounted detent which normally prevents the bolt from being re tracted, each of the means employedto opcrate the actuating means being adapted when operated first to move said detent and then retract said bolt, a pivotally mounted catch adapted to engage said actuating means to hold said bolt out of engagement with said keeper, a plunger extending outwardly from said casing adapted to engage the keeper when the door is closed, whereby said catch will be moved out of engagement y,

with said actuating means, permitting the bolt to move into engagement with said keeper, and manually controlled Ameans adapted when in one position to connect said plunger with said catch, and when in another position to operatively disconnect Said elements. i

18. A lock comprising a casing adapted to be secured to the door, said casing containing the-lock mechanism, a keeper adapted to be locked to the frame of the door, a casing which extends through the door and which contains the tumbler mechanism which determines the operation of the leek, seid hist mined easing being provided with e leejf-reeeii'ing head which rests against the de the doorE and said head having n. need engaging the exterior sur ne doer. ifi, A lock eon'iprising n` casing adapted to be mounted upon e door a keeper mounted upon the trmne of the door, seid keeper heving en elongated slot the intermediate p0rtien et' which is restricted, and having eninrged end shaped portions, n pivotel'ly mounted nre-shaped bolt mounted Within seid easing, which is adapted to engage with-said keeper, the riln of said bolt enfng the enlarged opening, and said bolt i1 "ng e 'web which extends into the re- 'ieted portion of seid slot, spring-means er normally urging said bolt into engagenient, with said keeper, independently opereblo ineens for retreating the bolt, means which normally prevents the bolt from being retracted, penl and ratchet mechanism for holding the bolt in retracted posit-ion, e flange enrried by said easing which is adapted to engage seid keeper when the door is closed, to release said pnwl and ratchet n'ieehnnisin, whereby the bolt will be entenintieelly moved to locking position, and n'lanually operated selected mechanism adapt-ed to connect or disconnect the plunger with said pawl and ratchet mechanism.

In testimony whereof @thx my signature in the presence of two witnesses.

PLATN LAZRUES. Witnesses:

EMMA VMNBERG, HELEN CAREY. 

